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Device and method for improving steering performance of four-wheel independent drive wheel frame adjustable vehicle steering

A four-wheel independent drive and steering performance technology, which is applied in the direction of power device, electrical device, control drive, etc., can solve the problems of wheelbase adjustment influence, slow wheelbase adjustment speed, complex structure, etc., and achieve the reduction of steering resistance torque , Improve the effect of steering performance

Active Publication Date: 2022-07-19
XCMG CONSTR MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology uses the suspension to adjust the wheelbase, the adjustment speed is slow and the wheelbase adjustment range is small, the wheelbase adjustment speed is slow, and the in-situ steering speed is slow; the existing technology uses mechanical mechanisms to cooperate with hydraulic transmission to adjust the wheelbase, or Use the clutch to adjust the distribution of power, and the complex structure of the wheelbase adjustment slowly affects the speed and controllability of the spot steering

Method used

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  • Device and method for improving steering performance of four-wheel independent drive wheel frame adjustable vehicle steering
  • Device and method for improving steering performance of four-wheel independent drive wheel frame adjustable vehicle steering
  • Device and method for improving steering performance of four-wheel independent drive wheel frame adjustable vehicle steering

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Effect test

Embodiment 1

[0052] An embodiment of the present invention provides a four-wheel independent drive wheel frame attitude-adjustable vehicle steering performance improvement device, including:

[0053] Four wheel frames 10;

[0054] controller;

[0055] Four wheel frame driving mechanisms are connected with the controller, and each wheel frame driving mechanism is respectively connected with the corresponding wheel frame to control the position and attitude of the corresponding wheel frame;

[0056] Four groups of wheel units, each group of wheel units includes at least two wheels 11, each wheel 11 is arranged on the same side of the corresponding wheel frame, and the position and attitude are controlled by the corresponding wheel frame;

[0057] Four groups of travel drive units are connected to the controller, and each group of travel drive units is connected to the corresponding wheel unit respectively, and controls the running state of each wheel 11 in the corresponding wheel unit to be...

Embodiment 2

[0073] An embodiment of the present invention provides a method for improving the steering performance of a vehicle with an attitude-adjustable four-wheel independent drive wheel frame based on any one of Embodiment 1, which is characterized by comprising the following steps:

[0074] Use each wheel frame driving mechanism to control the posture of the corresponding wheel frame, and then change the posture and posture of the wheel 11 connected to the wheel frame;

[0075] Each running drive unit is used to control the running state of each wheel 11 in the corresponding wheel unit to be a running state, a steering state or a stopped state, so as to improve the steering performance of the four-wheel independent driving wheel frame and the attitude-adjustable vehicle.

[0076] In a specific implementation manner of the embodiment of the present invention, the method further includes: the turning speed of the wheel frame meets the requirement of steering during driving at low speed...

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Abstract

The invention discloses a four-wheel independent driving wheel frame attitude-adjustable vehicle steering performance improvement device and method. The device comprises four wheel frames; a controller; and four wheel frame driving mechanisms, which are connected with the controller, and each The wheel frame driving mechanism is respectively connected with the corresponding wheel frame to control the position and attitude of the corresponding wheel frame; four groups of wheel units, each group of wheel units includes at least 2 wheels, each wheel is arranged on the same side of the corresponding wheel frame, and the corresponding wheel unit is formed by the corresponding wheel frame. Four groups of walking drive units are connected to the controller, and each group of walking drive units is connected to the corresponding wheel unit respectively, and controls the running state of each wheel in the corresponding wheel unit to be a walking state, a steering state or a stop state . The invention can realize the steering of the inner four wheels of the whole vehicle on the ground, and can reduce the steering resistance distance, thereby realizing the rapidity of in-situ steering and improving the steering time.

Description

technical field [0001] The invention belongs to the field of multi-wheel independent driving, and in particular relates to a steering performance improvement device and method for a vehicle with an attitude-adjustable four-wheel independent driving wheel frame. Background technique [0002] Multi-wheel independent drive vehicles have the characteristics of maneuverability, flexibility, rapid response, high reliability, and easy realization of complex driving force control. Each wheel of the multi-wheel independent drive electric vehicle is equipped with a drive motor, which can realize the center steering after canceling the steering mechanism. When one or several drive motors are damaged, the vehicle can still drive normally under a reasonable control strategy, and the damaged drive motors can be replaced at a convenient time, which improves the redundancy and reliability of the drive system. [0003] The multi-wheel independent drive is suitable for the passing requiremen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K7/00B60L15/20B60L15/32B60K17/04
CPCB60K7/0007B60L15/20B60L15/32B60K17/043B60L2260/28B60L2220/44Y02T10/72
Inventor 李勇杜万亮吴昊洋
Owner XCMG CONSTR MACHINERY
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